Improvement in spring bed-bottoms



J. P. ALLISON. Spring Bed-Bottoms.

No. 196,618 Patented Oct. 30, 1877.

N.FETERS, FHOTO-LITNDGRAPHER. wAsmNGYoN. n C

- UNITED STATES- PATENT OFFICE.

F JOSEPH P. ALLISON, OF NORMAL, nmnvors.

IMPROVEMENT IN SPRING BED-BOTTOMS.

v Specification forming part of Letters Patent No. 196,618, datedOctober 30, 1877; application filed May 23, 1877.

To all whom it may concern:

Be it known that I, J sEPH Pl ALLISON, of Normal, in the county ofMcLean and State of Illinois, have invented certain new and useful,Improvements in Spring Bed-Bottoms;

and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being made to the accompanyingdrawings, forming a part of this specification, and in which Figure v1is a'top view. Fig. 2 is a bottom view; Fig. 3, a longitudinal section.

I curved spring-slats D are supported near their ends. Thesecurved slatsare alsosupported by longitudinal strengthening-wires E, which aresecured at one end to the bottom or under side of the end piece Bof theframe, by means of screws orrivets a. The wires then pass up over theends-0f the, slats until they come to the slots (1 in the slats, nearthe cross-piece 0, through which they pass, and extend along under saidslats until they come to the cross I piece 0, when'they pass upwardthrough the slots 41, in the slats, and over the ends thereof, and are.secured to the .thumb-screws,or other equivalent adjustingdevices F,secured to the under side of the end piece B of 'the frame, whereby thewires can be tightened or. slackened, as desired.

The above-describedspring bed-bottom is very simple in" itsconstruction, and the slats,

being curved upwardly, as shown, sustain the weight of a person uponthem without sinking down or hollowing out at the middle of thelged-bottom, as is the case with most springeds.

The wires passing up through and over the ends of the slats give themthe requisite elasticity, which can be increased or diminished, asdesired, by tightening or slackening the wires and if any of the wiresbreak, they can be readily replaced at a trifling cost.

The frame can be dispensed with, if desired, and the crosspieces placedbetween the side bars, and the wires secured to the under side of theend boards of the bedstead.

I claim as my invention 1. The combination, in a bed, of the curved andslotted spring-slats D and the longitudinal strengthenin g-wires E,secured to the end pieces of the bed, and adapted to be tightened orslackened, substantially in the manner herein shown and described.

2. The combination, with the bed-frame A B B G G, of the curved andslotted springslats D, and the longitudinal strengtheningwires E,passing under, up through, and over the ends of the slats, and seciu-edas described, whereby the wires can be tightened or slackened, in themanner herein specified.

In testimony that I claim the foregoing I have hereimto set my hand this18th day of May, 1877.

JOSEPH P. ALLISON.

Witnesses:

' Tnos. SLADE,

T. F. WILLIAMS.

